I have a question about the best way to review practice problems. As of right now I am doing the EK series and for all the tests and practice problems I take I right my awnsers down in a book and then highlight the ones I get wrong and right a short little note next to them as to why I got them wrong so I can skim thru to see my weaknesses....HOWEVER I do not look at the awnsers/explanantions to the questions I got right...is this a bad habit or would it just be a waste of time?